Power regulator. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Regulators of current, voltage, power
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A feature of this regulator (see the diagram is the use of a threshold element on a transistor operating in avalanche mode. In order for the control device to operate at both half-cycles of the mains voltage, the threshold element VT1 is included in the diagonal of the diode bridge VD1-VD4, while the switching angle on both half-cycles is obtained The rest of the regulator does not differ from the known ones.
Establishing the device is reduced to the selection of the resistor R1. The engine of the resistor R4 is set to the lower position according to the diagram, the resistor R1 is replaced with a variable one with a resistance of 150 kOhm, set to maximum, an AC voltmeter is connected to the load and the device is connected to the network. Rotate the slider of the resistor R1 until the increase in voltage across the load stops. After that, the resistance of the variable resistor is measured in the found position and a fixed resistor R1 of the same resistance is installed.
Capacitor C1 - MBM for a rated voltage of 160 V. The transistor can be replaced with a KN102A dinistor. excluding resistors R2, RXNUMX.
Author: A. Brazhnikov, Kovrov, Vladimir Region; Publication: cxem.net
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